I have started an ingame auction with following settings:
Obelisk: 3b start, 4.8b buyout
Fenrir: 3.5b start, 5.3b buyout
Providence and Charon: 3.7b start, 5.6b buyout
14 days duration, place your bids or buy those shiny BPOs straight away - months of time and billions of ISK in research on those, not easy to come by.